/**
 * 
 */
package net.sourceforge.fenixedu.presentationTier.servlets.jsf;

import java.io.IOException;

import javax.faces.webapp.FacesServlet;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

import net.sourceforge.fenixedu.injectionCode.IllegalDataAccessException;
import net.sourceforge.fenixedu.presentationTier.Action.resourceAllocationManager.utils.PresentationConstants;

/**
 * @author - Shezad Anavarali (shezad@ist.utl.pt)
 * 
 */
public class FenixFacesServlet implements Servlet {

    public static ServletConfig servletConfig = null;

    final FacesServlet facesServlet;

    public FenixFacesServlet() {
	super();
	facesServlet = new FacesServlet();
    }

    public void init(ServletConfig config) throws ServletException {
	facesServlet.init(config);
	this.servletConfig = config;
    }

    public ServletConfig getServletConfig() {
	return facesServlet.getServletConfig();
    }

    public void service(ServletRequest request, ServletResponse response) throws ServletException, IOException {
	try {
	    facesServlet.service(request, response);
	} catch (IOException e) {
	    e.printStackTrace();
	    handleException(request, response, e);
	    throw e;
	} catch (ServletException e) {
	    e.printStackTrace();
	    int index = e.getMessage().indexOf("IllegalDataAccessException");
	    if (index > -1) {
		String message = e.getMessage().substring(index);
		throw new IllegalDataAccessException(message);
	    }
	    handleException(request, response, e);
	    throw e;
	}
    }

    private void handleException(ServletRequest request, ServletResponse response, Exception e) {
	HttpServletRequest httpServletRequest = (HttpServletRequest) request;
	httpServletRequest.setAttribute(PresentationConstants.EXCEPTION_STACK_TRACE, e.getStackTrace());
    }

    public String getServletInfo() {
	return facesServlet.getServletInfo();
    }

    public void destroy() {
	facesServlet.destroy();
    }

}